Ball game



1, 1938, R. HEIMERS 2,110,084

BALL GAME Original Filed Aug. 7, 1954 //V I/E/VTOII" Rum/f Hs/msfis,

A TTORNE Y.

Patented Mar. 1, 1938 UNITED STATES PATENT OFFICE BALL GAME Rudolf Heimers, Mexico, D. F., Mexico Original ap 738,876. 1937, Seri 1933 The invention relates to ball games, and more in which the ball is attached especially to games 5 Claims.

to an elastic string and after being thrown returns automatically towards the throwing or The new feature of the invention consists in passing the elastic string striking surface.

through friction-reducing means provided in the striking or throwing surface, and in using a longer elastic, so

as to enable the player to throw surface after it has returned through the contraction of the elastic, or may be forced to return completely into contact with said surface, whichever may be the length of the elastic or the force with which the ball mitting the ball to distance due to the string.

was thrown, but always perbe thrown at a much greater greater length of the elastic The features of the invention comprising friction-reducing means, throwing surface for located in the striking or enabling the elastic string to pass without excessive friction, and means for attaching a long elastic to the body of the player or housing it in the throwing implement itself,

it will be readily understood that these features may be applied to a throwing devices, others, providing a on the same principle.

This application is Serial No. 738,876, filed variety of diiferently shaped such as bats, rackets and great diversity of games based In the accompanying drawing, in which several preferred embodiments of the invention are shown board with the elastic rolled twisted axle.

Figure 2 is a transversal vertical cross-section of the device shown in Figure 1.

Figure 3 is a detailed view of the wheel with twisted axle.

Figure 4 shows a tennis racket provided with a friction-reducing attachment elastic housed in the handle.

Figure 5 is a side view of handle shown in cross-section.

Figure 6 is a detailed view of friction-reducing attachment,

and with the the racket, with the the detachable plication August 7, 1934, Serial No. Divided and this application June 1, al No. 145,902. In Mexico August 11,

Figure 7 shows the bracket with wheels attached to the top of the racket.

Figure 8 is a sectional View of the hollow cover with wheels entering the lower extremity of the racket handle.

Figure 9 shows an outer attachment for the handle with wheels around which the elastic is Wound.

Figure 10 is a back view of another tennis racket with a detachable frame holding the 10 wheels and the friction-reducing device.

Figure 11 is a detailed view of this frame.

The following devices to be described all make use of an improved friction-reducing device comprising two pairs of rollers 1, with one pair placed 15 at right angle to the other, said rollers turning on conical points entering the sides of a separate casing. As the elastic 5 passes through the central opening of said pairs of rollers, the friction is greatly reduced by the revolving rollers.

In the device shown in Figures 1 and 2, an oval board 8 is attached to a hollow handle 9. The friction-reducing rollers 7 are located within the center of the board 8 and the elastic 5, attached to the ball 4, passes back of the board 8 into 25 the handle 9 and is wound around a spool I0 provided in the lower part of said handle. The spool 10 has two elastic strings ll passing through it (Figure 3) which are already twisted to keep the elastic stretched and which twist themselves more tightly as the elastic is unwound from the spool, rotating therefore in an opposite direction the spool on which the elastic winds itself as the ball returns after having been thrown by the board 8.

Figures 4, 5 and 10 show the friction-reducing rollers attached to a tennis racket l2. The rollers l are housed in a casing l3 (Figure 6) provided on opposite sides with U-shaped channels l4 into which enter two of the central strings 40 of the racket. The elastic 5 passes between said rollers 1 to the back of the racket, and from there is led upward and downward in several turns around two sets of wheels or rollers l5, the upper set of which is fixed to a bracket I 6 at- 45 tached to the upper part of the racket, and the lower set is placed on a transversal axle in a hollow cover I! which closes the open lower extremity of the hollow racket handle. A wire I8 having an upper eye is also secured with its lower 50 extremity inside of said cover I! and serves to pull the end of the elastic through the handle when a new string is being inserted. The ball 4 may be held against the handle of the racket by a spring I9 when the racket is to be used for 55 detachable means, the relatively great lengthof the elastic stretched between the rollers 5. being sufficient for permitting the. ball to be thrown a great distance and at different angles;

In Figure 1 the upper ro lers are: n aced on the upp pa of a wire iirame 2.1 towhich are also slidably attached the casing 13 for the friction-reducing rollers 1 and a bracket 22 similar to bracket 20 and supporting the'lower set of rollers 15. This ,f -rame is held in place bythe bracket 22 and the casing l3, and -may also-be tt c e o any tennis ra ke and t ken-9ft" at will.

What I claim is:- V

A. ba l e map si aulela ic attach d a Qneend t aball, a racketairic cn r ducin guide comprising pairs of crossed rollers det ably se ure v nsii i rack t. and mean :a tached .to the vracket and comprising a plurality f rollers fo Wi din (upon them a p u li of turns of theelastie. a v

;ba1l g me, o is ng a baltfan elastic at h d t sa d balta a fr ct on reduc ng means vcomprising"crossedpairs of rollers dc.-

jingthe hollow handle, the elastic being led around said upper and lower rollers, means for pulling the elasticthrough said hollow handle, and means -f or detaining the ball out of contact with the striking surface of ,the racket.

.4. A ball game, comprising a racket, a frame holding friction-reducing means comprising crossed 'pairs of rollers, an upper and a lower setvof rollers vattached to said frame, a bracket holding said frame to the handle of said racket, means for holding the friction-reducing means between thestrings of the racket, a-ball, and an elastic attached to said ball, said elastic passing through said friction reducing means and. being wound alternatively .aroundrsaid upper and lower rollers. r

5. vAballgame,,cQmnrising an elastic attached at one endto a ball, a racket, a friction reducing guide detachably secured to said racket, and means attached to the racket and comprising a plurality of rollers for winding upon them a plurality of turns of theelastic. I

RUDOLF HEIMERS. 

